.mrbiker-form-wrapper {
    max-width: 600px;
    margin: 0 auto;
    padding: 20px;
}

.mrbiker-form {
    background: #fff;
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.mrbiker-form-group {
    margin-bottom: 20px;
}

.mrbiker-form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: #333;
}

.mrbiker-form-group input,
.mrbiker-form-group textarea {
    width: 100%;
    padding: 12px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 14px;
    transition: border-color 0.3s;
    box-sizing: border-box;
}

.mrbiker-form-group input:focus,
.mrbiker-form-group textarea:focus {
    outline: none;
    border-color: #667eea;
}

/* Captcha Styles */
.mrbiker-captcha-container {
    margin: 30px 0;
    padding: 20px;
    background: #f8f9fa;
    border-radius: 8px;
}

.mrbiker-captcha-label {
    margin-bottom: 15px;
    font-weight: 600;
    color: #333;
}

.captcha-math-container {
    background: white;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
}

.captcha-question {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 20px;
}

.math-icon {
    font-size: 32px;
    flex-shrink: 0;
}

.math-problem {
    display: flex;
    flex-direction: column;
    gap: 5px;
}

.math-text {
    color: #666;
    font-size: 14px;
}

.math-equation {
    font-size: 24px;
    font-weight: bold;
    color: #2c5530;
    font-family: 'Courier New', monospace;
}

.captcha-answer-wrapper {
    display: flex;
    gap: 10px;
    margin-bottom: 10px;
}

.captcha-answer-input {
    flex: 1;
    padding: 12px;
    border: 2px solid #ddd;
    border-radius: 4px;
    font-size: 16px;
    transition: all 0.3s;
}

.captcha-answer-input:focus {
    outline: none;
    border-color: #667eea;
}

.captcha-answer-input.success {
    border-color: #4caf50;
    background-color: #f1f8f4;
}

.captcha-answer-input.error {
    border-color: #f44336;
    background-color: #fef5f5;
}

.captcha-verify-btn {
    padding: 12px 24px;
    background: linear-gradient(to right, #667eea, #764ba2);
    color: white;
    border: none;
    border-radius: 4px;
    font-weight: 600;
    cursor: pointer;
    transition: opacity 0.3s;
    white-space: nowrap;
}

.captcha-verify-btn:hover:not(:disabled) {
    opacity: 0.9;
}

.captcha-verify-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.captcha-status {
    min-height: 24px;
    font-weight: 600;
    text-align: center;
    padding: 5px;
    border-radius: 4px;
    transition: all 0.3s;
}

.captcha-status.success {
    color: #155724;
    background-color: #d4edda;
}

.captcha-status.error {
    color: #721c24;
    background-color: #f8d7da;
}

/* Submit Button */
.mrbiker-submit-btn {
    width: 100%;
    padding: 15px;
    background: linear-gradient(to right, #667eea, #764ba2);
    color: white;
    border: none;
    border-radius: 4px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: opacity 0.3s;
}

.mrbiker-submit-btn:hover:not(:disabled) {
    opacity: 0.9;
}

.mrbiker-submit-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* Messages */
.mrbiker-message {
    display: none;
    padding: 15px;
    margin-top: 20px;
    border-radius: 4px;
    text-align: center;
    font-weight: 600;
}

.mrbiker-message.success {
    background: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.mrbiker-message.error {
    background: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

/* Responsive */
@media (max-width: 768px) {
    .mrbiker-form {
        padding: 20px;
    }
    
    .captcha-answer-wrapper {
        flex-direction: column;
    }
    
    .captcha-verify-btn {
        width: 100%;
    }
}

@media (max-width: 480px) {
    .mrbiker-form-wrapper {
        padding: 10px;
    }
    
    .mrbiker-form {
        padding: 15px;
    }
    
    .captcha-question {
        flex-direction: column;
        text-align: center;
    }
    
    .math-equation {
        font-size: 20px;
    }
}